首页
登录
职称英语
[originaltext] What is the difference between a computer virus and a compute
[originaltext] What is the difference between a computer virus and a compute
游客
2023-09-05
66
管理
问题
What is the difference between a computer virus and a computer worm? Both can infect and damage computer systems. However, computer viruses and computer worms differ in the way they reproduce and spread. A virus, which is short for "vital information resources under siege", is a program or code that secretly enters a computer by piggybacking on e-mail messages, files, or programs shared between two different computer systems. Then the virus infects its new host by attaching itself to the files within that computer and deleting or changing them or even overwriting entire programs. Just like a biological virus in the human body, a computer virus replicates itself so that it will continue to be contagious when data is shared with another computer system. In 2000, for example, the famous "Love Bug" virus, which traveled via e-mail messages, destroyed files in computers all over the world. Worms, too, are malicious programs that reproduce and spread. But unlike viruses, they do not need to attach themselves to other files. They are programs that run independently and spread on their own through computer networks. Thus they do not require human intervention to make their way from one computer to another. The famous Internet worm of 1988, for example, copied itself across the Internet, destroying many computer systems as it went. Currently, computer analysts are worried about the Sasser worm, which disabled computers in Britain, South Africa, and Taiwan.
Questions 29 to 31 are based on the passage you have just heard.
29. In what aspect do computer viruses and computer worms differ?
30. What can we learn about the "Love Bug" virus from the passage?
31. Which of the following statements is true about computer worms?
选项
A、It first appeared in 1988.
B、It traveled via e-mail messages.
C、It first broke out in Britain.
D、It was meant to steal documents.
答案
B
解析
选项中的It,first appeared/broke out,traveled via e-mail等表明,It可能指电脑病毒,本题可能考查它的产生或传播。短文中举例提到,在2000年,著名的“爱虫”病毒通过电子邮件传播(traveled via e-mail messages),破坏了世界各地电脑里的文件,由此可知,答案为[B]。
转载请注明原文地址:https://tihaiku.com/zcyy/2986614.html
相关试题推荐
[originaltext](32)Iamoptimisticbynature.IamgladthatIamalive.Iamg
[originaltext](32)Iamoptimisticbynature.IamgladthatIamalive.Iamg
[originaltext]America’snationalsymbol--theBaldEagle--almostwentextinct20
[originaltext](26)Afewmonthsago,millionsofpeopleinLondonheardalarms
[originaltext](26)Afewmonthsago,millionsofpeopleinLondonheardalarms
[originaltext]M:Hello,Janet.I’mgladtoseeyouback.Didyouhaveaniceho
[originaltext]M:Hello,Janet.I’mgladtoseeyouback.Didyouhaveaniceho
[originaltext]M:Hello,Janet.I’mgladtoseeyouback.Didyouhaveaniceho
[originaltext]W:Goodmorning,I’mVictoriaPorter.HowcanIhelpyou?M:Good
[originaltext]M:I’venevertastedsuchtastysoup.IwishIhadtherecipeandI
随机试题
ItwasachillyNovembereveninginNewYorkCity,andmydaughterandIwer
FilmloversarelookingtoLondonforthenexttwoweeks,todiscoverthebe
双控开关表示一个开关面板上有2个开关按键。
反渗透水不能去除A.悬浮物 B.微小离子 C.CO D.微生物
我国银行信息科技发展呈现的特征有()。A.银行业务高度依赖信息科技 B.
建设工程项目管理任务分工表,应该明确建设项目的()等单位。A:决策 B:
阳虚证最主要的表现是A.舌质淡白苔薄白 B.口不渴或少饮 C.面色白而无华
关于臣药介绍错误的是A:可对兼症起主要治疗作用的药物B:是辅助君药发挥治疗作用
学生害怕在社交场合讲话,担心自己会因发抖、脸红、声音发颤、口吃而暴露自己的焦虑,
某商业银行的财务指标如下表所示(单位:亿元) 根据以上资料,回答下列问题:
最新回复
(
0
)